Beginner and need help IDing v common shrub pls!

[MortaIWombat]

There's a pic on my profile, I hope. What IS it, and can I prune it heavily at some point as it's drooping all over the place, albeit very prettily?

Thanks in advance for any help.

Ooh - my neighbour has lots of this in her front garden. Will ask her if I see her!

Kerria japonica. Lovely cake btw!

God, I love MN. Thank you my dears. Now I can talk to her it by name.

Yes, I'm very proud of that cake! Didn't dare put this year's one up - think lurid green gently sinking car with dribbly headlights....